JavaScript/jQuery VectorMap - legends.source
Specifies the source of data for the legend.
grouping
Specifies the type of the legend grouping.
The VectorMap's legend supports two grouping types.
color
Can be used if you have grouped map markers or areas in several differently-colored groups. For more information, refer to the layers's colorGroupingField and colorGroups property descriptions.size
Available for markers of a bubble type only. Can be used if you have grouped bubble markers in several groups and specified a size for bubbles in each group. For more information, refer to the sizeGroupingField and sizeGroups property descriptions.
layer
Specifies a layer to which the legend belongs.
Pass a layer name to this property.
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